Good point, apparently this is the case [1]. I had horrible car sickness as a child, on both trains and cars and I always thought I just grew out of it as I got

Good point, apparently this is the case [1]. I had horrible car sickness as a child, on both trains and cars and I always thought I just grew out of it as I got older. A few weeks ago I was in the passenger seat of a heavy smoker's car and felt as sick as ever. Never realised the link. [1] http://www.ncbi.nlm.nih.gov/m/pubmed/21036110/ http://www.ncbi.nlm.nih.gov/m/pubmed/21036110/